Guards

Agent hub: a pane listing this session's subagents with status, model, turns and tokens, and a box to steer a running one.

A persistent JavaScript kernel the model drives with one eval tool: state survives between cells, and cells call Claude Code tools, models and subagents.

oh-my-pi TTSR rules: a regex rule denies the tool call that would break it, with the rule as the reason; a question rule is judged after each turn.